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12-17-2010, 08:07 PM
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#1
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Rivet Master 
1974 31' Excella 500
Huger
, South Carolina
Join Date: Nov 2010
Posts: 893
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Gas piping replacement
I have to replace the entire LP piping system in a 74 31'.
I have the diagram so I'm good there.. What I'm exploring now is what materials to use. From what I've gathered so far, the best bet is to go with the "black" pipe for the main line and use copper for the offshoot lines that go to the appliances.
Some pipe cutting and threading doesn't seem so bad.. is this really the best/safest way to go with this?
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12-17-2010, 08:28 PM
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#2
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Rivet Master Airstream Dealer
Corona
, California
Join Date: Feb 2002
Posts: 13,134
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Quote:
Originally Posted by DanielB
I have to replace the entire LP piping system in a 74 31'.
I have the diagram so I'm good there.. What I'm exploring now is what materials to use. From what I've gathered so far, the best bet is to go with the "black" pipe for the main line and use copper for the offshoot lines that go to the appliances.
Some pipe cutting and threading doesn't seem so bad.. is this really the best/safest way to go with this?
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You can use copper tubing, for all of the LPG lines, as Airstream has done.
However, no splices or "T's" are allowed in the interior.
All the tubing, must be exposed, except when it goes thru the underbelly and thru the floor, into the trailer.
Andy
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12-17-2010, 08:36 PM
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#3
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Rivet Master
San Angelo
, Texas
Join Date: May 2005
Posts: 1,269
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Daniel,
I know others will agree when I say that it is the only way to go. When you are strapping the copper line on to the underbelly, make sure that you use rubber insulators, so the metal doesn't rub through the line.
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Frederic
1971 Sovereign International - SOLD  2004 F-350 King Ranch
AIR # 8239
TAC # US-7
EX-WBCCI # 8371
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12-17-2010, 08:39 PM
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#4
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Rivet Master
1974 31' Excella 500
Huger
, South Carolina
Join Date: Nov 2010
Posts: 893
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Quote:
Originally Posted by Inland RV Center, In
You can use copper tubing, for all of the LPG lines, as Airstream has done.
However, no splices or "T's" are allowed in the interior.
All the tubing, must be exposed, except when it goes thru the underbelly and thru the floor, into the trailer.
Andy
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So copper for everything? Should be easier than cutting and threading the black pipe.
Did they ship my floor channel?
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12-17-2010, 08:45 PM
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#5
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Rivet Master Airstream Dealer
Corona
, California
Join Date: Feb 2002
Posts: 13,134
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Quote:
Originally Posted by DanielB
So copper for everything? Should be easier than cutting and threading the black pipe.
Did they ship my floor channel?
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It should ship Monday from Ohio, in 4 foot pieces.
Andy
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12-17-2010, 09:05 PM
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#6
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Rivet Master
1974 31' Excella 500
Huger
, South Carolina
Join Date: Nov 2010
Posts: 893
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Awesome. Thanks.
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12-17-2010, 09:14 PM
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#7
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Rivet Master
2005 22' Safari
Hyde Park Place
, Ohio
Join Date: Jul 2010
Posts: 984
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Quote:
Originally Posted by DanielB
So copper for everything? Should be easier than cutting and threading the black pipe.
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That's code. Code is really particular about the "no tees or joins inside the trailer" rule. It's also safer.
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TX-16
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12-17-2010, 09:24 PM
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#8
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Rivet Master 
1973 31' Excella 500
1961 30' Sovereign
1947 22' Liner
Durham
, Ontario
Join Date: Jun 2010
Posts: 2,544
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Quote:
Originally Posted by Dave Park
That's code. Code is really particular about the "no tees or joins inside the trailer" rule. It's also safer.
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No shut off valves inside either. Also code.
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12-18-2010, 01:01 AM
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#9
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Maniacal Engineer
1971 25' Tradewind
Menlo Park
, California
Join Date: Jan 2010
Posts: 883
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Quote:
Originally Posted by wasagachris
No shut off valves inside either. Also code.
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The stove and fridge both have such from the factory on our '71, though.
- Bart
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12-18-2010, 10:12 AM
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#10
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moderator
1974 31' Sovereign
Ottawa
, Ontario
Join Date: May 2008
Posts: 6,637
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Quote:
Originally Posted by barts
The stove and fridge both have such from the factory on our '71, though.
- Bart
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Ditto. As do all AS TTs I have seen.
__________________
.
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Looking to sell your Airstream or buy a different one?
Or maybe you need a part or just want to sell one?
Be sure to look in at http://www.airstreamclassifieds.com
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12-18-2010, 11:23 AM
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#11
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Rivet Master
1965 22' Safari
Vassar
, Michigan
Join Date: Jun 2009
Posts: 669
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Mine as shut offs for the fridge, stove and furnace. We have updated the appliances but the shut offs were original from the factory.
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Tim
TAC MI 14
Everyday is a Saturday
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12-18-2010, 12:59 PM
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#12
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Rivet Master
1973 31' Excella 500
1961 30' Sovereign
1947 22' Liner
Durham
, Ontario
Join Date: Jun 2010
Posts: 2,544
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shut offs were allowed inside in the 70's but not now. If you are replacing the propane lines leave them outside the trailer. Personally I don't intend to reinstall them in my trailer when I do the propane lines. More connections are more points that it can leak.
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12-18-2010, 01:35 PM
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#13
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Rivet Master Commercial Member
Currently Looking...
Marco Island, FL
, Hood River, OR
Join Date: Dec 2005
Posts: 3,761
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Be certain when buying the copper tubing that you get 'Type K' or better tubing that is specifically rated for LPG use. Make sure that you don't get the refrigeration grade copper.
__________________
Lew Farber - RVIA Nationally Certified Master Tech.... MASTER TECH RV SYSTEMS, INC.
AM SOLAR SALES & INSTALLATIONS ..... MAGNUM INVERTERS.....LIFELINE BATTERIES
NO MORE AIRSTREAM.... NO MORE MEMBERSHIPS.... BUT I'M STILL AROUND! 
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12-18-2010, 02:15 PM
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#14
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Rivet Master
1974 31' Excella 500
Huger
, South Carolina
Join Date: Nov 2010
Posts: 893
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Quote:
Originally Posted by lewster
Be certain when buying the copper tubing that you get 'Type K' or better tubing that is specifically rated for LPG use. Make sure that you don't get the refrigeration grade copper.
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Nice tip. Thanks.
I don't think that I can depend on the people who work at these stores to know anything about anything.. except when break time is.. 
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